Truck-bolster for railway-cars.



J. F. OCONNOR.

TRUCK BOLSTER FOR RAILWAY CARS.

APPLICATION FILED FEB. 25, I914.

1,43,?57. Patented Oct. 23,1917.

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IINITED TATE FATENF @FFIQE.

JOHN F. OCONNOR, OF CHICAGO, ILLINOIS, ASSIGNOR TO PRATT AND LETCHWORTI-I COMPANY, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

TRUCK-BOLSTER FUR RAILWAY-CARS.

Specification of Letters Patent.

Patented Oct. 23, 191'.

Application filed February 26, 1914. Serial No. 821,298.

To all whom it may concern:

Be it known that I, JOHN F. OCONNOR, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Truck-Bolsters for Railway- Cars, of which the following is a specification.

This invention relates to improvements in bolsters and more particularly to truck bolsters for railway cars.

Objects of the invention are to provide a bolster of the type specified which consists of two steel castings of substantially like form which may be cast without the use of cores; to provide a cast steel bolster of trong and serviceable construction which may be easily cast and having a pattern which may be easily drawn from the molds; and to provide a cast steel bolster composed of two like parts securely riveted together and each of which is substantially channelshaped in cross section.

The invention furthermore consists in the improvements in the parts and devices and in the novel combination of the parts and devices as herein shown, described or claimed.

In the drawing forming a part of this specification Figure 1 is a top plan view of one form of bolster embodying my improvements. Fig. 2 is a side elevation of the structure shown in Fig. 1 and Figs. 3 and 4 are vertical, enlarged sectional views taken substantially on the lines 33 and 44, respectively, of Fig. 2.

In said drawing, the bolster proper is designated generally by the reference A. and, as shown, comprises two substantially like members B B each a steel casting and forming substantially a vertical half of the bolster. Each member B is substantially channel-shaped in cross section, as shown most clearly in Figs. 3 and 4, and comprises a vertically extending web 10, upper flange 11 and lower flange 12, the upper flange 11 being straight from end to end and the lower flange having upwardly inclined portions 13 and outer horizontal end portions 14:. Each member B, at its ends, is provided with horizontally extending centra-lly located flanges 15 having straight outer edges 16 and diagonally extending inner edges 17.

As shown most clearly in Fig. 3, the

flanges 15 overlap when the two members member B, at its ends, is provided with integral guiding ribs 30, 30 for members of the truck (not shown), and on its inner side is provided with a plurality of vertically extending strengthening ribs 21, 21. Each member l3 also has its upper'fflanges cut away slightly at the center as shown at 22 to receive ribs 122 on the center bearing plate 23, shown in Fig. 1 in full lines and in dotted lines in Fig. 2. Near the ends of the bolster there are secured thereto side bearing brackets 33, 33 which may be of any well known or desirable construction.

From the preceding description it will be seen that the two members of the bolster are of substantially identical construction and may be cast without the use of cores. The bolster members are also so designed that it is an easy mater to make the molds therefor, since the pattern may be readily withdrawn from the mold inasmuch as the pattern will be substantially entirely located within the drag of the flask, the only portions of the pattern which extend into the cope being the parts corresponding to the ribs 30. The bolster is furthermore so constructed that it has all straight lines, a desirable feature, and is practically of girder-like construction, with the fastening devices or connections located wholly within the confining walls of the bolster.

Although I have herein shown and de these forces being exerted in straight lines and therefore in the most eflicient manner. "iVhenthis action takes place,- the upright members 21, 21 act as struts to prevent the tendency of said portions .to collapse. Hitherto, in some forms of cast steel bolsters, where the upper and .loWer members are "curved or bulged, there is a certain tendency for those portions under compression to buckle and those under tension to straighten 'nt, thus decreasing the rigidity and sta bility of the bolster. By designing the boister as I have shown, these defects are re r-3,757

is substantially channel-shaped in cross sec tion and provided Wltll horizontally extending overlapped flanges at its ends, said flanges being riveted together,substantially as specified.

3. A bolster of the character described comprising two members of like construction each of Which is substantially channelshaped in cross section and provided With centrally located horizontally extending flanges at its ends,-said flanges being overlap sedand riveted together, the upper and lower flanges cf such channel-shaped membersbeingcutaway above and below said overlappedriveted flanges, substantially as specified.

Signed this lath day oi l ebruary, 191%, in the presence of two Witnesses.

JOHN F. QCO'NNOR.

Witnesses l/VILLIAM A. German, Josnrrr HARRIS.

Copiesof thispatent may beiobtained for five cents each, by addressing the Commissionerof Patents, -Washington, D. G. 

